Xbee Pro S2B Resistance Across 1st and 10th Pin is 60ohm

Hi all,
i have been using Xbee Pro S2B since past few months.

I built a mesh network too.

I think because of some power supply problem all of 5 Xbee Pro S2B modules are not responding.

When i checked the resistance across 1st and 10th Pin its showing 60Ohm and 40ohm on some other devices.

What shall i do now. Please do suggest me something i totally struck [:((] in my project and i can’t afford to buy 5 more.

Thanks in advance